Using your K&N air filter is easy. First, find your vehicle's factory air box. Open it up and take out the old air filter. Then, simply drop in the new K&N filter. Make sure it fits snugly and close the air box. As for maintenance, the filter is washable and reusable. Every 50,000 to 100,000 miles (depending on your driving conditions), you can wash it. Use a K&N filter cleaning kit. Just soak the filter in the cleaner, rinse it gently, and let it dry. Once dry, re - oil it with K&N filter oil. When handling the filter, be gentle to avoid damaging the delicate cotton media. And always check the fit before closing the air box to ensure proper performance.